Cause the 5.15.0-23-generic couldn't support it, I used 5.17 mainline kernel.
$ cat /proc/acpi/ibm/lcdshadow status: 0 commands: 0, 1 And after press the Fn + D, the screen display angle changed, and the content of /proc/acpi/ibm/lcdshadow is changed, and the GUI of 'Restrict Viewing Angle' is changed between on and off. Here is the bug for kernel. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1966061 ** Tags added: oem-priority originate-from-1956808 sutton -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1966178 Title: Screen-privacy couldn't work Status in OEM Priority Project: New Status in gnome-control-center package in Ubuntu: New Bug description: On ThinkPad X13 it supports 'Privacy Guard', but on jammy the g-c-c couldn't control it. From the GUI, I click 'Restrict Viewing Angle' on and off, there are no change at screen. From Fn+D, it could let screen change, and the GUI could follow the changes. To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1966178/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
